/Engine/Source/Runtime/Engine/Classes/Materials/MaterialInstance.h
Cache resource shaders for rendering on the given shader platform. If a matching shader map is not found in memory or the DDC, a new one will be compiled. The results will be applied to thisFMaterialin the renderer when they are finished compiling. Note: This modifies material variables used for rendering and is assumed to be called within a FMaterialUpdateContext!
void CacheResourceShadersForRendering ( EMaterialShaderPrecompileMode PrecompileMode )